Archive for the ‘Notes’ Category

  • Entity Relationship Model

    Sep 26, 13 • 3792 Views • Notes • • No Comments

     As we all know that modelling is a very important phase in designing the database applications. Database applications define a particular database and programs that implement the database queries and updates. Such as, a bank database application keeps track

  • Physical Database Design

    Sep 26, 13 • 1559 Views • Notes • • No Comments

    As we all know that the data is an important resource of an organisation and the database is the most fundamental component of an information system. Therefore, management and control of data and database is very important. Database design is the process of

  • Logical Database Design

    Sep 26, 13 • 3441 Views • Notes • • No Comments

    Database plays an integral role in the commercial domains, which provides users to store, update and retrieve the data. Database management system provides the system, tools and interfaces which helps to design a database. Logical database design is an

  • Object Oriented Data Model

    Sep 26, 13 • 2925 Views • Notes • • No Comments

      A data model is a logical organization of real world entities and relationships among objects. That data model which captures the object oriented concepts like encapsulation, abstraction, polymorphism, inheritance, etc. is called object oriented data

  • Introduction of Cache Memory with it’s Mapping Function

    Sep 19, 13 • 5623 Views • Science Notes • • No Comments

    In a computer system the program which is to be executed is loaded in the main memory. Processor then fetches the code and data from the main memory to execute the program. The DRAMs which from the main memory are slower devices. So it is necessary to insert